Korean Journal of Plant Tissue Culture (식물조직배양학회지)

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Effects of Media and Elicitor on Betalain and Phytolaccosides Production in Hairy Root Cultures of Phytolacca esculenta van Houtte

자리공(Phytolacca esculenta van Houtte) 모상근의 Betalain 및 Phytolaccosides 생성에 미치는 배지 및 Elicitor 영향

  • 양덕조 (충북대학교 자연과학대학 생명과학부) ;
  • 김용해 (충북대학교 자연과학대학 생명과학부) ;
  • 윤길영 (충북대학교 자연과학대학 생명과학부)
  • Published : 1998.11.01
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Abstract

The effects of media and elicitors on betalain, phytolaccoside G and D2 production were examined in the hairy roots of Phytolacca esculenta van Houtte induced by Agrobacterium tumefaciens $A_4$T. Phytolaccoside G and D2 from Phytolacca hairy roots PEH2 were identified by TLC, HPLC, IR, Mass, $^1$H-NMR, and ^(13)C-NMR. Among the culture media tested, SH medium was the best for hairy root growth of hairy roots. White medium was the most suitable medium for betalain production, while MS medium was for phytolaccoside G and D2 production. Although the growth of hairy roots was supped by light (1,000 Lux), the production of betalain, phytolaccoside G and D2 was enhanced by the same light treatment. Addition of elicitors such as NaF, chitosan, and yeast extract to the culture medium increased the content of betalain, phytolaccoside G and D2, suggesting the importance of culture condition for the production of those componds.

자리공 엽절편에 Agrobacterium tumefaciens $A_4$T을 접종하여 암상태에서 초기 접종량의 139배로 분지능이 높고 성장률이 우수한 모상근 세포주인 PEH2를 선발하였다. 선발된 모상근으로부터 생리활성 물질인 Phytolaccoside G 및 D2를 IR, Mass, NMR등으로 동정하였다. 모상근 PEH2의 성장은 SH배지에서 가장 양호하였으며, 암상태 보다 광상태에서 배양하였을 때 40% 성장이 억제되었으며, betalain의 생성은 white 배지에서 가장 양호하였다. 배지별 Phytolaccoside G와 D2의 생성은 MS배지에서 암상태로 배양하였을 때 가장 양호하였으며, SH 및 . White 배지에서는 암상태보다 광상태에서 높은 생성을 나타내어 phytolaccoside G와 D2의 생성은 광에너지에 의하여 조절됨을 확인하였다. 자리공 모상근에서 betalain 및 phytolaccoside G와 D2의 생산성을 향상시키기 위한 방안으로 처리한 elicitor 을 처리하였던 바, 모상근의 성장은 억제되었으나, chitosan 및, yeast extract에 의하여 betalain 및 Phytolaccoside G와 D2의 생성이 촉진되어 적절한 elicitor와 광의 조합처리는 자리공 모상근으로부터 betalain 및 Phytolaccoside G와 D2의 생산성을 향상시킬 수 있음을 확인하였다.

Keywords

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